Tool



June 27, 1933. H F HOWARD 1,915,669

TOOL

Filed Oct. l0, 1932 @El D. f1 11.

Patented 'June 27, 1933 f uNITl-:Dl STATES? yPA"riatrli OFFICE HENRYT. HOWARD, or DETROIT, MICHIGAN, -AssIGNon To WHITMAN av BAsNns INCORPORATED; or DETROIT, MICHIGAN, A CORPORATION' or MICHIGAN .Toon

i Application led October 10, 1932. Serial No. 637,157.

This invention relates generally to `tool, holders andv refers more vparticularly to a holder for cutting tools ysuch as counterbores havingfheads provided4 with cutting blades and axiallylextendingshanks. u

@ne of the essential objects `of theinvention-is toprovidea holder of this typein which means is provided for direct engagement with the head ofthe tool to drive the same, and othermeans is provided for grip-V ping the shank so that the direct driveaforesaid will be maintained.v s

Another object is vto provide a holder that is adaptedto vinterchangeably receive. a

greater range of tools and that is so con,- structed` that v the j drivingf connection and gripping relationship referred to may be v easily and'quickly-established,by hand without the aid of wrenches, keys or other implement-s.v

Another object is to provide holder in v whicha minimum of parts are employedto accomplish the desired results.

Another object is to provide afholder that is'sturdy and compact and rthat is free from objectionable threads and adjust-ments.

Another object is to provide a holder that is simple in construction and can be manufactured at a comparatively low cost.

Other objects, advantages and knovel details. of construction of this invention will be made more apparent as this description proceeds, esp-ecially'when considered in connec-` tion with the accompanying drawing, wheref Figure 1 is an elevation of acounterboring tool'and holder therefor embodying my invention, lwith parts broken away and in section;

Figure 2 is a view taken at substantially right angles toFigure 1 with 'partsbroken away and in section;v ,j j

Figure 3 is a sectional view taken onl the line 84-3 of F igure 2; H y l AFigure 4 isa sectional view taken on the line 1-41 of Figure 1;k j l.

Figure 5 is a perspective view ofthe tool receivingy member; y,

Figurel l6 is a v,perspective view ofv the sleeve;A

Figuref7jis a 'perspective-view of the cou`n` cutting blades` 8 thereon. shank 1 has the usual bore lior a pilot (not -is aside elevation of the detent;y

A Figure 10 is a top` plan view of the detent; Figure 11 is an end elevation of the detent;

Figurel 12 is an enlarged portion of F ig-k 'or of an assembly embodying my invention.

As shown, the tool A has a shank 1` of cylindrical formation and is provided at one end of said shank with an enlarged head 2 having Preferably the The ing detent 8. Preferably the tool receiving V member 6 has ashank 9 of conventional del Sign, an annular flangelO at the inner @ndfr' of said shank, a cylindrical portion 11 be yond and having a socket 11 therein, and a pair of driving lugsv 12 and 13 respectively projecting endwise from diametrically opposite points of the free end of the cylindrical portion 11. The sleeve 7 is substantially equal in length to and is mounted to turn on the cylindrical portion 11 of the tool receiving member 6. lPreferably this sleeve 7 is provided at opposite ends vthereof with knurled portionsr lll and 15 respectively and is provided between said knurled portions with a smooth Aportion 16 having a. circum`- i ferentially extending slot 17 and a circumferentially extending 'tongue 18 projecting l end the tongue 18 is piovicletlwvith an inl Wardly projecting` longitudinally extending cam vportion 23 which is normally at one side of the detent 8 in a circumlerentially eX- tending slot 24k in the cylindrical portion 11 of the tool receiving` member. As shown,

one side 2501i the cam portion is inclined or beveled for engagement with thecorrespondingly inclined or beveled side wall 26 of the slot 24, while the other side 27 of the cam portion constitutes an extension of the longillO . t'udnal edge 21 of the tongue yand is disposed at substantially rightfangles tothe axis of the sleeve."V The detent 8 preferably' semicircular 'inconfiguration and is mounted for" tilting movementginwthe slot 2,4. Aashowm;r

the detent 8,.,ta`pers from oneend to they other and has rounded endsBO and 31 resplectivelyfi.y engaging curved ends 32 and 33 respectivelyl ofthe slot. Preferably one side 34 ofthe def tent and the-'adjacent wall 350i the slot are normally vsubstantially vrparallel and extend at substantially right: angles to the axis of .the cylindrical"portionl 11, While the `other side 36 of they detent is inclined downwardly and inwardly and is adapted to be engaged by .the side 27 Vof the cam portion `23 ofthe tongue. Thus when the holder parts are as sembled the shank 1 of the tool maybe insorted intothesocketll so that 4theffdriving lugs 12and'13` will be received in correspondinglyshaped recesses 12 and 13in the'- head 2, whereupon thesleeve 7vmaybe" turned byhand to cause the cam 23 of the tongue 18 `to tiltfthe detent 8-so that theedge 40 thereof will firmly engage and hold thefftool shankl. Consequently when the assembly is in use the rotary motion imparted tothe shank 9 will be transmitted.V by the "lugs 12 and T13 directly tothe head 2 Lhaving thecut- Ating blades 3 thereon, while the locking en? gageinent between the deten't 8 and Itheshank f1 will function only to prevent thetoolfshank i member tio the head 2ofthe tool, instead from moving longitudinally Vin or vfalling* out of -thexsocketllV Thus the direct connectionffrom' lthe shank 9. ofthe toolreceiving of through theatool vshank 1, insures 'a vstronger `and more positive drive and 'per-y `mits the detent 8 4to function independently asta locking element. "In this connection it l Will be noted that vthedetent 8 is adaptedv to engage the` periphery of thetool shank 1,

- hence such tool Shanksy do not. have 'tobe specially constructed or grooved to accomy i modate pins, Tkeys and the like. As a result a holder constructed in accordance with my invention 1s adapted to interchangeably re- `ceivea greaterrange of tools. v

i "After being used the tool A` may `be re-` moved from'theholder B by simply turning the sleeve 7 f by' hand in the opposite direc-- tion so 'that the 'detent 8 willbe released by the cam 23. gInthis connection-.it will-be' `noted that thevtongue 18 in' addition to actuating the detentfcooperates withthe' wall 25v of the :slot 24 to prevent axial displacement of'y y the sleeve I from thecylindricalportion 11v of thel tool "receiving member. lHowever,` if desired the sleevemaybe removed from the cylindrical portionll of the tool 4receiv- -ing member yby ai proper implementsuch'as usite` points thereof for this purpose.`

aspanner wrench V(notVsh-own). Preferably suitable'holes 43j and 44 respectively are provided inthe sleeve 7at diametrically oppo- What- Iclaimlasmy invention "insg,l ,i

socketl portion for receivin said socket portion with va .circumferentially extending slot for the reception of a tiltable detentya sleeve the socketportion and having a tongue providedin the slot with a; portion, and means 'for holdings;l tool shank inV they socket portion? aforesaid, includinga ,detent of substantially-semi-circular 'c`o`n`ig uration mounted to tiltfinthe-slot and 'actuf able bythecam portionfof the sleeve tonguel A-tool holder including a member having a socket portion for receiving the shank of atool and provided in said ortiorfJ with a transversely extendingklotgmeans for grip,i ping the tool shank infthesocket, including a detent extending llongitudinally o'f the slot and fmounted' tonswing ^lengthwise 'of -the socketportion, fand actuating means for the gripping means including'a member movable circumferentially fof the socket portion 4"and A having a part in'thefslot and engageablewith the detent.l v l I" 3. A tool'holder including a member havl y ing'a socketportionfor `receiving 'a vshankY of a tool and providedin one side* of lsaid portion with a circumferentially extending slot hav'- ing` opposite sidewalls thereof extending sub-y stantially at right angles vto the-axisy ofthe socket vvportion, and means" for gripping the tooll shank in thesocket portion including a member having its ends ypivoted in opposite ends'of the slot andhaving the portion remote fromf-the pivotsmovable lengthwise `of the socket portion between the transverselyex#V tendingwa'lls aforesaid of; the slot, and 'means posite ends of the slot so that' the intermediatev 11 `ortio`n"thereof is movable in fthe -arcl` of a circle longitudinally ofA the `socket 'between opposite walls` ofthev slt,fand actuating means forthe detent including means movable about the socketandl havingafpartmovable in saidA slotlbetweena `Wall theeiof'and one side of said intermediate portion'.- 'v

`In tStlmOIly yWl'leref I 'gmx ,ny4 signature. i HENRY F; HQWARQ '-f f 19111 atoolf holders@w membenhn'vi'ils a the shank of a" vt'oljand provided interme iatefthe ends of 

